ISO 5644:2024
Porcelain Tableware

Standard No.

ISO 5644:2024

Release Date

2024

Published By

International Organization for Standardization (ISO)  IX  /  ISO

Latest

ISO 5644:2024

Introduction

Standard Framework and Technological Evolution

As the latest international standard in the field of porcelain tableware, ISO 5644:2024 integrates the technical requirements of 12 original standards such as ISO 6486 and EN 1217, and for the first time systematically standardizes the applicability test methods for multiple scenarios such as microwaves/ovens. Compared with the 2018 draft, the main updates are reflected in:

Technical dimension	ISO 5644:2024	Traditional standard
Thermal shock resistance (ΔT50)	90℃(hot drinks)/180℃(oven)	No grading requirement
Metal dissolution test	Citing the latest limit of ISO 6486-1/-2	Different standards in different countries
Dishwasher durability	0-2 classification system	Pass/fail only

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Analysis of core performance requirements

Physical property indicators

The standard puts forward unified requirements for different materials such as bone china and hard porcelain:

• Water absorption: All porcelain must be <0.5% (EN 1217:1998 Method A)
• Light transmittance: Meet the quantitative standard of EN 1184:1997 Method A
• Handle strength: Withstand ≥0.05J impact energy (ASTM C368-88)

Food safety specifications

According to the ISO 6486 series of standards, the lead and cadmium dissolution of tableware must meet the following requirements:

Case: After a dinner plate with a diameter of >110mm is immersed in a 4% acetic acid solution at 22℃ for 24 hours:
Lead ≤ 0.8mg/dm² | Cadmium ≤ 0.07mg/dm²

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Special Function Test Requirements

Temperature Adaptability

Usage Scenario	Test Method	Key Parameters
Microwave Oven	EN 15284	Handle Temperature ≤ 56℃
Oven	EN 1183:1997 Method B	ΔT50 ≥ 180℃
Freezer	LUCIDEON PT36	No visible damage

Structural integrity

Special provisions of the standard:

• The lid of a container with a lid must not be detached when the opening and closing angle is ≥90°
• Pouring utensils must ensure that the liquid is in a single stream
• Stability under a 15° tilt test

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Implementation suggestions

Manufacturers

1. Raw material control: bone china must contain ≥35% tricalcium phosphate
2. Firing process: The final firing temperature of hard porcelain is 1360-1400℃
3. Glaze selection: Low lead and cadmium formula is preferred

Testing Agency

Recommendations to establish:

• Equivalent verification procedures for LUCIDEON PT series methods
• Automated temperature control system for thermal shock testing
• ICP-MS detection capability for metal dissolution

ISO 5644:2024 Referenced Document

• BS 8654 Domestic and hospitality use ceramic tableware articles intended for contact with foodstuffs. Specification
• EN 1183:1997 Materials and articles in contact with foodstuffs - Test methods for thermal shock and thermal shock endurance
• EN 1184:1997 Materials and articles in contact with foodstuffs - Test methods for translucency of ceramic articles
• EN 12875-2 Mechanical dishwashing durability test method Part 2: Inspection of non-metallic products*， 2026-03-06 Update
• EN 12875-4 Mechanical dishwashing resistance of utensils - Part 4: Rapid test for domestic ceramic articles
• EN 12980 Materials and articles in contact with foodstuffs - Non-metallic articles for catering and industrial use - Method of test for the determination of impact resistance
• EN 13834 Cookware - Ovenware for use in traditional domestic ovens
• EN 15284 Materials and articles in contact with food stuffs - Test method for the resistance to microwave heating of ceramic, glass, glass-ceramic or plastics cookware
• ISO 6486-1 Ceramic ware in contact with food — Release of lead and cadmium — Part 1: Method of test
• ISO 6486-2 Ceramic ware, glass-ceramic ware and glass dinnerware in contact with food - Release of lead and cadmium - Part 2: Permissible limits

ISO 5644:2024 history

• 2024 ISO 5644:2024 Porcelain Tableware

Topics on standards and specifications

Standard and Specification